Anhydrous Zinc Sulfate from Japan
Anhydrous zinc sulfate (ZnSO4) is the water-free form used in pharmaceuticals, electroplating, and as a catalyst precursor. It qualifies for HTS 2833.29.45.00 as a chemically pure sulfate of zinc per Chapter 28 notes. This fine white powder is highly reactive due to lack of hydration.
Duty Rate — Japan → United States
1.6%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Provide assay certificates showing <0.5% water content to distinguish from hydrates and prevent disputes
• Pharma-grade requires FDA prior notice if for drug use; separate from industrial imports
• Avoid classifying as reagent kit; pure compounds stay in Chapter 28, kits go to 3822